WDIO Electron Package Bundler

Overview

The WDIO Electron Package Bundler provides a set of utilities and plugins for configuring Rollup to build packages in this repository. It simplifies the build process by providing common configurations and specialized plugins for both ESM and CommonJS output formats.

Core Features

Utility Functions

readPackageJson()

Returns configuration based on your package.json:

• Input paths for Rollup
• Package name
• Output directories for ESM/CJS builds

Plugins

1. TypeScript Plugin

Configures TypeScript compilation with declaration file generation.

1import { typescript } from '@wdio/electron-bundler';
2export default {
3  plugins: [
4    typescript({
5      // optional TypeScript options
6    }),
7  ],
8};

2. Package.json Generator (emitPackageJsonPlugin)

Generates appropriate package.json files for ESM and CJS builds with correct module type settings.

3. Warning Handler (warnToErrorPlugin)

Elevates build warnings to errors to ensure clean production builds.

4. Dependency Injector (injectDependencyPlugin)

Injects library dependencies into specific code locations during ESM builds.

Configuration options:

Option	Description
packageName	Name of the library to inject
targetFile	Target bundle file for injection
importName	Variable name for the imported library
bundleRegExp	RegExp pattern to identify injection points
bundleReplace	Function to generate replacement code

External Plugins

The package also exports:

• nodeExternals from 'rollup-plugin-node-externals'
• nodeResolve from '@rollup/plugin-node-resolve'